Editing 1849 in architecture (section)

===Buildings===
[[File:1850 CustomHouse HinghamPacket Boston MFABoston.png|thumb|[[Boston Custom House]]]]
* March 1 – [[Ashby de la Zouch railway station|Ashby railway station]], [[Leicestershire]], England, probably designed by Robert Chaplin, opened.<ref>{{cite book|first=Gordon |last=Biddle|title=Britain's Historic Railway Buildings: an Oxford Gazetteer of Structures and Sites|publisher=Oxford University Press|year=2003|isbn=0-19-866247-5}}</ref>
* May 1 – [[Stone railway station]], [[Staffordshire]], England, designed by H. A. Hunt, opened.
* September 2 – [[Gare de l'Est]] railway station in [[Paris]] (France), designed by François Duquesnay, opened.
* October 30 – [[Coal Exchange (London)|London Coal Exchange]] opened.
* December 1 – [[Gothenburg City Hall]] ([[Sweden]]), designed by Pehr Johan Ekman, opened.
* [[Church of the Immaculate Conception, Farm Street]], central London, designed by [[Joseph John Scoles]], completed.
* [[Dormition Cathedral (London)|All Saints, Ennismore Gardens, south London]], designed by [[Lewis Vulliamy]], interior completed.
* [[Boston Custom House]] ([[Massachusetts]]), designed by [[Ammi B. Young]], completed.
* [[Rich-Twinn Octagon House]], [[Akron, New York]], built.